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Smart Residual MCCB(Reclosing Type) TDK3EL

The smart reclosing-type residual current molded case circuit breaker features a rated insulation voltage of 1000V. It is specifically designed for application in three-phase four-wire neutral point directly grounded (TT) power distribution networks that operate at an AC frequency of 50Hz, with a rated voltage of 400V and a rated current of 800A.
Its core functions include:
Providing indirect contact protection for electrical systems and personnel;
Preventing fire hazards triggered by ground fault currents, which typically occur when the insulation of electrical equipment is damaged;
Serving as an electric energy distribution device;
Protecting power lines and power supply equipment against a range of common faults, such as overload, undervoltage, short circuit, and single-phase grounding.

    Model and Meaning

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    Serial No. Item meaning
    Enterprise code:TALEMOD
    MCCB(Molded Case Circuit Breaker)
    Design No.
    Electronic &adjustable
    With residual current protection
    Frame grade current (A)Inm=125,Inm=250,Inm=400,Inm=630,Inm=800
    Automatic reclosing of leakage trip
    Y:LCD;S:Digital

    Main Technical Parameters

    Model TDK3EL-125CY
    TDK3EL-125CS
    TDK3EL-250CY
    TDK3EL-250CS
    TDK3EL-400CY
    TDK3EL-400CS
    TDK3EL-630CY
    TDK3EL-630CS
    TDK3EL-800CY
    TDK3EL-800CS
    Frame grade curent Inm(A) 125 250 400 630 800
    No.of poles 3P+N 3P+N 3P+N 3P+N 3P+N
    Rated operating voltage Ue(V) AC400/50Hz
    Rated insulation voltage Ui(V) 1000
    Rated impulse withstand voltage Uimp(kV) 8
    Flashover distance(mm) ≯50 ≯100
    Ultimate short-circuit breaking capacity Icu(kA) 5070(H) 6585(H)
    Operating short-circuit breaking capacity Ics(kA) 3550(H) 4265(H)
    Rated residual short-circuit making (breaking) capacity I△m(kA) 12.5  17.5(H) 16.25  21.5(H) 16.25
    Rated short-time withstand current Icw(kA)/s 1.5 3 5 8 10
    Residual current operating characteristics AC type
    Rated residual operating curent I△n(mA) 50/100/200/300/400/500/600/800
    MCU automatic tracking or manual setting
    100/200/300/400/500/600/800/
    1000 MCU automatic tracking or manual setting
    Residual operating time characteristics Delayed/non-delayed type
    Limit non-drive time of delayed type(s) 0.06/0.1/0.2 Optional:2I△n
    Breaking time (s) I△n≤0.5;2I△n≤0.2;5I△n≤0.15
    Auto reclosing time (s) 20~60
    Operational performance (times) Powered 1500 1000 1000 500
    Not powered 8500 7000 4000 2500
    Total 10000 8000 5000 3000
    Overload and short circuit characteristics Three-stage protection,electronically adjustable,see "Description of Protection Characteristics"for details
    Overvoltage protection value (V) Set value (250~300)±5%
    Undervoltage protection value (V) Set value(145~200)±5%
    Link control delay time(ms) ≤40ms
    Communication delay time(ms) ≤200ms

    Main Functions and Features

    Core processing and interaction design
    The device uses a high-performance 32-bit ARM microprocessor, which can complete signal processing and intelligent control in real time, providing core computing power support for the stable operation of the equipment. It is also equipped with an LCD display in Chinese and English, creating a friendly human-machine interface (HMI), which greatly simplifies the operation process and takes into account the technical performance and ease of use of the equipment.
    Residual current protection and dynamic regulation
    In terms of residual current (leakage) protection, the device supports online setting of residual current levels and has a reclosing function, which can flexibly adapt to the protection needs of different scenarios; in addition, the device can monitor and track the residual current of the line in real time, and automatically adjust the protection level according to actual conditions. While providing precise protection, it effectively guarantees the operation rate and reliability of the product.
    Multiple protection functions and parameter management
    The device has a complete protection system, including long-delay, short-delay, and instantaneous three-stage protection (using an electronic tripping method that is independent of the power supply voltage), as well as overvoltage, undervoltage, and phase loss protection. It also has a high breaking capacity to ensure the reliability of line short-circuit protection. At the same time, it supports online setting and modification of protection functions and parameters, and can also identify and display trip types such as residual current, lock, overload, undervoltage, overvoltage, and phase loss, and store, query, and delete related records to facilitate user management and fault tracing.
    Expanded functionality and communication capabilities
    The network model of the device has communication functions, which can realize remote communication, telemetry, remote control and remote adjustment to meet the needs of intelligent remote management. In addition, it also provides optional plug-in lightning protection modules and infrared communication functions. Users can flexibly expand the device's protection capabilities and data transmission methods according to actual usage scenarios, thereby improving the device's adaptability and practicality.

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